asyncpk1.py: Import the gi module before calling gi.require_version

This reverts aa65005

Properly fix #179

Author: bigon

asyncpk1.py

@@ -22,6 +22,8 @@
 import dbus
 from functools import reduce
 try:
+    import gi
+    gi.require_version('Gdk', '3.0')
     from gi.repository import Gdk
     gi.require_version('Gtk', '3.0')
     from gi.repository import Gtk